The aroma of freshly brewed coffee filled the tiny, cluttered apartment, a comfort to Amelia. She had just finished reading a book and was headed back to the used bookstore to see if they had any more of her favourite author. Her heart gave a little skip when she found the book she was looking for.

She was surprised and delighted as she opened the book, a small, intricately folded paper fell out. It was a short story, written in beautiful longhand, about a lost dog finding its way home.

Her throat tightened with emotion, a feeling that felt warm and welcome. She smiled, a genuine, expansive curve of her lips. She thought, "Life is good." She felt a sudden, inexplicable urge to do something nice for someone else.

Emotion: happy

Cluster: Positive / Joy
PC1 (Valence): 3.98 Positive
PC2 (Disposition): -1.14

Role in Research

This story is one of 1,000 stories generated for the emotion happy. During extraction, it was fed through Gemma4-31B and its hidden state activations were captured at 11 layers.

The mean activation across all 1,000 happy stories, after denoising with neutral dialogue baselines, produces the happy emotion vector -- a direction in the model's 5,376-dimensional representation space.

Logit Lens (Layer 40)

Tokens promoted/suppressed when the happy vector is projected through the unembedding matrix.

Promoted:
la0.676
excitedly0.533
enthusi0.505
de0.498
๐Ÿคฉ0.495
Suppressed:
S-0.896
๐Ÿ˜ž-0.430
ness-0.410
ใใ‚Œใงใ‚‚-0.387
L-0.379